In the DP driver, check if VSC SDP is supported and propagate this value
to dp_panel. In dp_display's dp_mode, the out_fmt_is_yuv_420 parameter
must also utilize this value since YUV420 is only allowed when VSC SDP
is supported.
Changes in v2:
- Move DP programming when VSC SDP is supported to this patch
Signed-off-by: Paloma Arellano <quic_parel...@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
drivers/gpu/drm/msm/dp/dp_display.c | 5 ++++-
drivers/gpu/drm/msm/dp/dp_panel.c | 1 +
drivers/gpu/drm/msm/dp/dp_panel.h | 1 +
3 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
b/drivers/gpu/drm/msm/dp/dp_display.c
index 1a84f68e2b59a..4b1b79b74bc72 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1596,8 +1596,10 @@ void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
struct msm_dp *dp = dp_bridge->dp_display;
struct dp_display_private *dp_display;
+ struct dp_panel *dp_panel;
dp_display = container_of(dp, struct dp_display_private, dp_display);
+ dp_panel = dp_display->panel;
memset(&dp_display->dp_mode, 0x0, sizeof(struct dp_display_mode));
@@ -1618,7 +1620,8 @@ void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
!!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NHSYNC);
dp_display->dp_mode.out_fmt_is_yuv_420 =
- drm_mode_is_420_only(&dp->connector->display_info,
adjusted_mode);
+ drm_mode_is_420_only(&dp->connector->display_info,
adjusted_mode) &&
+ dp_panel->vsc_sdp_supported;
/* populate wide_bus_support to different layers */
dp_display->ctrl->wide_bus_en =
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c
b/drivers/gpu/drm/msm/dp/dp_panel.c
index 127f6af995cd1..db1942794f1a4 100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.c
+++ b/drivers/gpu/drm/msm/dp/dp_panel.c
@@ -53,6 +53,7 @@ static int dp_panel_read_dpcd(struct dp_panel *dp_panel)
if (rc)
return rc;
+ dp_panel->vsc_sdp_supported = drm_dp_vsc_sdp_supported(panel->aux,
dpcd);
link_info = &dp_panel->link_info;
link_info->revision = dpcd[DP_DPCD_REV];
major = (link_info->revision >> 4) & 0x0f;
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.h
b/drivers/gpu/drm/msm/dp/dp_panel.h
index 6ec68be9f2366..e843f5062d1f6 100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.h
+++ b/drivers/gpu/drm/msm/dp/dp_panel.h
@@ -46,6 +46,7 @@ struct dp_panel {
struct dp_display_mode dp_mode;
struct dp_panel_psr psr_cap;
bool video_test;
+ bool vsc_sdp_supported;
u32 vic;
u32 max_dp_lanes;
--
2.39.2
